徐啟祐

1. #include<iostream>
   
2. #include<cstdlib>
   
3. #include<string>
   
4. using namespace std;
   
5. int main(){
   
6.     string str="013276893721";
   
7.     cout<<"原字串:"<<str<<endl;
   
8.     cout<<str.substr(4)<<endl;
   
9.     cout<<str.substr(3,7)<<endl;
   
10.     system("pause");
    
11.     return 0;
    
12. }

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